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%I #5 Dec 18 2015 18:17:43
%S 6,75,1383,82057,17485499,12269256241,26618983431241,
%T 174570423155403607,3439388112891290777185,
%U 203331913765001724843185283,36063230821901471856813524283909,19188799396869069058685453832499056759
%N Number of n X n symmetric 0..5 arrays with no element equal to the sum or difference mod 6 of any two of its horizontal and vertical neighbors
%e Some solutions for 4X4
%e ..1..5..1..1....1..3..3..4....1..1..5..1....1..3..3..5....1..1..3..3
%e ..5..3..3..3....3..3..3..3....1..3..1..5....3..3..5..5....1..1..1..5
%e ..1..3..1..1....3..3..2..2....5..1..3..1....3..5..3..1....3..1..1..1
%e ..1..3..1..5....4..3..2..2....1..5..1..5....5..5..1..3....3..5..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Aug 05 2011
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